Finding the Fourth Proportional to 2,748.10, 4,120.77 and 899.01

Step by Step Solution

1. Step 1: Write the proportion equation
   2,748.10 : 4,120.77 = 899.01 : x
2. Step 2: Convert to fraction form
   2,748.10/4,120.77 = 899.01/x
3. Step 3: Cross multiply
   2,748.10x = 4,120.77 × 899.01
4. Step 4: Simplify right side
   2,748.10x = 3,704,592.83
5. Step 5: Solve for x
   x = 3,704,592.83/2,748.10
6. Step 6: Final answer
   x = 1,348.06